[%c_effect g5;square;g5;type;GreatFind;persistent;true] Forcing the knight to go back.
19... f8b8  20. d3d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] White's position is clearly better with the strong knight on f5, pressure in the center, and the possibility of exploiting the weakness of the d5-square. 20... e7f8  21. d4c5  21... d6c5 